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The Adrenal Glands

The adrenal glands are situated on top of each kidney. The outer adrenal cortex produces the hormones cortisol and aldosterone which are essential to life. The inner adrenal medulla produces non-essential hormones such as adrenaline which is involved in the body's stress response.The pituitary gland releases hormones which control the production of androgens, glucocorticoids and mineralocorticoids from the adrenal cortex.The sympathetic nervous system stimulates the adrenal medulla to produce adrenaline and noradrenaline.

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Specification: AQA Biology (7402), A-level, 3.6.4.2 Control of blood glucose concentration. Topic: Hormonal Communication.

Key terms in this lesson

codon
A sequence of three consecutive bases on mRNA (or DNA) that codes for a specific amino acid or a stop signal during protein synthesis.
mutation
A random change in the base sequence of DNA (a gene mutation) or in the structure or number of chromosomes (a chromosome mutation).
intron
A non-coding section of a gene or pre-mRNA molecule that is removed by splicing before translation.

More in Hormonal Communication

All 11 lessons in Hormonal Communication · All AQA A-level Biology topics